Interlocking metal flashing



Feb 13s 1934.

D. I Evow ET Al.'

INTERLOCKING METAL FLASHING 'Filed Dec. 6, 1930 Affe,

Patented Feb. 13, i934 itl G METAL FLASHING David Lovow, New Yo N. Y., and Abraham Ratner, East Orange, N. J., assignors, by mesne assignments, to The Cheney Company, a corporation of Massachusetts Application December 8, 1930. Serial No. 500,586

10 Claims.

This invention relates `to improvements in metal dashing as applied in building construction, being particularly directed to a novel form of interlocking flashing whereby there will be produced a complete mechanical bond in eversI direction between the flashing and the mortar bed in which it is disposed.'

Further, it is an object of this invention to so construct the strips whereby the end sections thereofmay be caused to be interlocked, through superimposition, without the necessityoi' any hxing element or medium.

Still further, it is an object of this invention to provide for a novel form of interlocking dashing whereby, in conjunction with the mechanical bonding functions thereof, through the shape of the same, there is further introduced a feature of additional formations within the dashing to prevent lateral or longitudinal displacement of the :flashing once it is imbedded in the mortar.

Still further, it is aimed to provide a novel form of corrugated interloclnng metal flashing, which, due to its saw-edge formation, is capable of being readily bent at either of its sides, to forni upwardly or downwardly extending iianges or projections, which may be dettened against the side walls of a building, and which, due to the saw-edge formation, will cause water seeping through the building. to pass only above the interlocked strips and through the folds at the flange portions thereof, without in any way affecting the masonry.

These and other advantages, capabilities and features of the invention will appear from the subjoined detailed description of one specific embodiment of the invention as illustrated in the accompanying drawing, in which Figure l represents a iront elevation in section showing the device forming the subject matter gi this invention, in position in a wall of a build- Figure 2-is a front view in section of twointerlcking strips, taken along lines 2--2 of Figure Figure 3 is a plan view of a single strip of metal.

Figure 4 is a perspective view of a composite interlocking flashing strip having upwardly and downwardly projecting flanges.

Referring to the reference characters in the drawing, particularly to those shown in Figure 1,

numerals 10 and 11 indicate respectively, two

(Cl. 'i2-127) .As shown in Figures 1 to 3 inclusive, the ash1 ing F is composed of a sexies oi' metallic strips,

each of which is fabricated so as to have the formation or a series of saw-edge shaped cor= rugated sections. Each o! the strips comprises of a plurality of sections having short and lonsr faces 12 and 13, 12 and 13 etc.. parallelly disposed with respect one to the other, the said faces -12 and 13 being likewise angularly inclined one to the other to resemble substantially a sawedge construction.

On the surface or the long face 13 of the respective sections of each ilashingstrip, there are formed in staggered formation as by stamping a series ol projections 14, which serve to prevent the series oi dashing elements once they are bound in the mortar, from being laterally displaced.

To interlock adjacent strips of dashing all that is necessary is to superimpose one oi the end sections S of one strip over the end section S oi the' next adjacent end strip so that the two short faces .deilning the section S are disposed at the right and above the two short faces denning section S', while the long face denning section S 'is directly above the long face defining section S'.

In view of the fact that all oi the iaces forming the surfaces of the respective strips are parallel in formation and similar in size and construction, the respective flashing elements combined to form a continuous series may be interlocked by merely superimposing adjacent ends or sections thereof as above described. The series of interlockingfiashings are then disposed between the courses of a building and surrounded by mortar, whichwhen it hardens, forms a complete mechanical bond with the respective sec tions.

Referring particularly to Figure s, where a perspective view is shown, how the interlocking dashing may be applied in either of two conditions, the dashing F as interloclred is bent at the sides thereof to form flanges R and S, both of which need not be formed at one time or for the same purpose, the essence of the disclosures in Figure 4 being that when a continuous .strip of dashing formed oi a series oi interlocked sections is disposed in mortar between two different courses in a building construction that the sides of the flashing may be both upwardly or downwardly bent'to form iianges R and S and that in such bending the shortiaces 12, 12', etc., may be compressed inwardly as at 15, 15', etc., so that the upstanding or down projecting angeswhen ico either is used, may be firmly and rigidly bent upwardly or downwardly laterally of the normal surface of the flashing against the sides of the courses in the building for the purpose of causing water, if any seeps towards or into the mortar or the respective courses, to pursue a path along and above the line of the flashing and away from the mortar or building courses.

1t is obvious that various changes and modifications may be made to the details of construction without departing from the general spirit of the invention as set forth in the appended claims.

l. A flashing consisting of a plurality of continuous strips of sheet metal bent to form sawedge shaped corrugations, the alternate faces of said strips being parallel, the end sections of adjacent strips being adapted to be superimposed one with respect to the other, to form an interlock, and the surfaces of said strips having therelarly shaped corrugations, the alternate faces of said strips being parallel, some of the surfaces of said strips having stamped projections in formation thereon, said flashing having a flange projecting laterally from the face of said strips at a side thereof, the corrugations in said flange being flattened for the purpose specified.

4. A through-walliashing for use in building construction comprising a sheet of metal of desired width to extend substantially from side to side of the wall in which it is'used, said sheet being bent to provide a series of transverse angularly shaped interlocking means adapted to receive mortar and bond said sheet against movement relative to the wall longitudinally in one direction, and projections pressed from the surface of thesheet providing on one side thereof recesses for the reception of mortar to bond said sheet against movement in a transverse direction.

5. A through-wall flashing comprising a sheet of metal of desired width to extend through a wall in which it is used and formed with a transverse series of parallel ribs presenting at spaced intervals a series of partllel dove-tail recesses for the reception of mortar to bond said flashingl intervals a series of parallel dove-tail recesses for the reception of mortar to bond said flashing and wall against relative movement in one direction,A and additional -means formed by a projection of metal from one of said faces of said sheet providingv a series of recesses for the reception of mortar serving to bondthe sheet and wall against relative movement in a transverse direction.

fraction, and a series of projections pressed from rection, saidvprojections being confined within and wall against relative movement in a transverse direction, the recesses provided by the projections on one face being adapted to interlocis with a corresponding series of projections of a separate sheet, whereby a series of flashing sheets may be interlocked together.

8. A. through-wall ashing comprising a sheet of metal of desired width to extend through a wall in which it is to be used and deformed to provide a transverse series of `ribs having ad-J jacent faces disposed in acute angular relation to each other to provide a series of transverse undercut recesses for the reception of mortar to bond said flashing and wall against relative movel1 ment vertically and in a longitudinal direction, and a series of projections pressed from one of the faces of said sheet and providing recesses on the opposite face thereof for the reception of mortar to bond the sheet and wall against relative movement in a transverse direction.

9. A through-wall flashing comprising a sheet of metal of desired width to extend through a wall in which it is to be used and deformed to provide a transverse series of ribs having adia-= cent faces disposed in acute angular relation to each other to provide a series of transverse undercut recesses for the reception of mortar to bond said flashing and wall against relative movement vertically and in a longitudinal direction, and a series of spaced projections pressed from one of the faces of said sheet and providing recesses on theppposite face thereof for the reception of mortar to bond the sheet and wall against relative movement in a transverse direction, said recesses formed by said series of spaced projections of one sheet capable of interlocking with the projections of a separate sheet whereby to aid in interlocking a plurality of sheets together.

l0. A through-wall flashing comprising a sheet of metal of desiredwidth to extend through a wall in which it is to be used and deformed to provide a transverse series of ribs having adjacent faces disposed in acute angular relation to each other to provide a series of transverse undercut recesses for the reception of mortar to bond said flashing and wall against relative movement vertically and in a longitudinal dl- '135 one of the faces of said sheet and providing recesses on the opposite face thereof for the reception of mortar to bond the sheet and wall against relative movement in a transverse diw 14|. the thickness of said flashing sheet as determined by the upper and lower planes of said ribs whereby said sheet may be embedded in a normal mortar joint of a masonrybuilding. 14. D ABRAHAM RATNER. DAVID) LEVOW. 

